Polyhedral approximation of a spherical body and two-dimensional projections therefrom
US5222896A · kind A · utility
17Cited by
16References
56Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 8, 1991 |
| Grant date | Jun 29, 1993 |
| Priority date | — |
| Expiry date | Aug 8, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63F2009/124
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A polyhedral approximation of an Earth globe or other non-planar surface and a projection of such non-planar surface to a two-dimensional form with a practical minimum of distortion of principal and secondary features is disclosed. Vertices are selected on the non-planar surface to be mapped so as to define identifiable panels which are suitable for individual study because of their incorporation of at least one of the principal features wholly within one of the panels. Vertices are selected so that the panels are individually shaped and sized to accommodate at least a majority of at least one of the principal features.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.